426 



CRUSTACEOLOGY. 



Smarajj- 

 dina. 



Avachni- manuscripts of his friend Walckenaer ; it contains but 



des. one species, Episenus truncalus. 

 """•"V""'' Sp. 1, Truncatus. Thorax cordiform, a little long- 

 Tnmeatus. er t£, an hroad, anteriorly acute, little, above of an ob- 

 scure reddish brown ; the breast reddish brown ; the ab- 

 domen brown, pyramidal, marginated in front ; the dor- 

 gal area three-sided, with the hinder angles produced; 

 the third pair of feet white, the others brown ; the apex 

 of the first and fourth, and base of the latter, white. 

 4G. Ml Genus XLVI. Micrommata, Latreille. Aranea, De 



cromsuta. Geer, Fabr. Sparassus, JValckenaer. 



Maxilla; straight, oval inclining to square, with a lon- 

 gitudinal angle on their inside ; the internal edge at the 

 base somewhat concave ; the apex obliquely truncated. 



Lip short and semicircular. 



Feet elongate ; the fourth longest, the second rather 

 shorter ; then the first, afterwards the third. Lower 

 part of the apex of the tarsi furnished with a little 

 double brush. 



Sp. 1 . Smaragdina. Bright green ; dorsum of the 

 abdomen with a longitudinal band of a darker colour. 



Aranea smaragdula, Fabr. Araignee toulc-verle, De 

 Geer. Sparasse emerundine, Walck. p. 39- Microm- 

 mata smaragdina, Latr. 



Inhabits the European woods and groves. The male 

 - has three longitudinal red lines on its back. 



Observation. The genus was first established by La- 

 treille under the name Micrommate, in the Now. Diction, 

 d' His!. Natur. torn. 24. p. 135. in which work also a 

 figure is given ; on this account we have regained it, 

 and have consequently rejected the term Sparassus of 

 Walckenaer, Latreille's name having the right of priority. 

 •17. Thomi- Genus XLVII. Thomisus, Walck. Latr. Aranea, 

 sus. Lin. Fab. De Geer. 



Maxilla oblique, covering the sides of the lip, and in 

 some degree converging ; the internal apex truncated. 



Lip somewhat oval, or nearly quadrate, generally 

 longer than broad. 



Feet, the first and second pair longest ; the latter ra- 

 ther longer than former or scarcely shorter ; the third 

 and fourth generally much less ; sometimes one longer, 

 sometimes the other. 



Observation. The mandibular are either perpendi- 

 cular or somewhat inflexed, in many conical, with very 

 short nails. Latreille formerly included this genus un- 

 der the titles Heteropoda and Misumena. 



** Thorax convex and heart-shaped; the sides, es- 



{lecially behind, abruptly sloping, anteriorly broad- 

 y truncated ; the largest feet not double the length 

 of the body ; the first and second pair of the same 

 magnitude as the rest, but far exceeding them in 

 thickness (sometimes one sometimes the other 

 longer.) The first joint of the tarsi with several 

 moveable little spines, in a single or double series ; 

 the nails of all the tarsi naked. Lip somewhat 

 oval, the apex either truncated or obtuse: The 

 apex of the maxillae somewhat wedge-shaped. 

 Gt re us. Sp. I. Cilreus. Thorax, at the insertion of the eyes, 



transversely elevated, the sides anteriorly produced and 

 prominent ; eyes equal ; abdomen roundish-triagonal, 

 broader behind, with a red line on each side ; body yel- 

 lowish-citron coloured. 



Thomise citron, Walck. p. 2 1 . Thomisus citrinus, Latr. 



Inhabits flowers in Europe. Is common in Britain. 



The male is much smaller than the female, of a brown 



colour, banded with yellowish-green. 



Prlstatus. Sp. 2. Crislatns. Lateral eyes placed in a tubercle, 



the lower ones largest ; body pale grey, inclining to 



reddish ; the back of the thorax on each side with a 



spot, and margins whitish ; abdomen somewhat orbi- 



culate, the circumference obscurely brown, with a pale, Araelmi. 

 broad, dorsal band with its side notched. des. 



Thomisus crfsfatus, Walck. p 32. Thomisus crist. Latr. s ~*~-{-~ e/ 

 Inhabits gardens and fields ; is very common about 

 Paris. Thoracic spot pale, often bifid in front. Abdo- 

 men with five impressed dorsal marks ; the anterior 

 one largest, the other four disposed in a quadrangle. 



Latreille thinks Aranea liturata of Fabricius is near 

 akin to this species. 



** Thorax convex heart-shaped, the sides, especially 

 behind, abruptly sloping, the anterior part broad- 

 ly truncated ; the larger feet not twice the length 

 of the body ; all of nearly an equal degree of 

 thickness ; the hinder four not much shorter ; the 

 anterior witli four little spines ; the nails of all the 

 tarsi scarcely visible. The maxillae and labium 

 as in the preceding division. 

 Sp. 3. Lynceus. Lateral eyes largest, placed on a Lynceus. 

 tubercle; the tubercles of the hinder ones thickest; 

 body pale yellowish-grey, variegated with punctures 

 and spots of a blackish colour ; abdomen very large, of 

 a triangular-oval form, broader behind. 

 Inhabits France and Scotland. 



Thomisus lynceus of Latreille, who considers it much 

 akin to Thomisus onuslus of Walckenaer, p. 32. 



*** Thorax depressed, and somewhat oval, and very 

 obtuse before ; the larger feet not twice the length 

 of the body ; all of an equal thickness ; the tarsi 

 below hairy ; the first joint with a few little spines; 

 the apex with two brushes under the nails ; abdo- 

 men oblong ; the maxillae, beyond the insertion of 

 the palpi, nearly of an equal breadth, distinctly and 

 abruptly truncated ; lip somewhat quadrate ; hin- 

 der lateral eyes distant. 

 Observation. This divison is near the genus microm- 

 mata of Latreille's former works. 



Sp. 4. Oblongus. Pale yellowish, above with white Oblongus 

 hairs, the abdomen somewhat cylindrical, with the 

 longitudinal obscure lines. 



Thomise oblonge, Walck. p. 38. Thomisus oblongus, Latr. 

 Inhabits France and Denmark on plants. 

 **** Thorax depressed and heart-shaped, truncated 

 before; the four anterior feet more than double 

 the length of the body ; the under part of the tarsi 

 in most of the species hairy, in all furnished with 

 two brushes under the nails ; the maxillae short, 

 much inflexed above the lip, nearly of an equal 

 breadth beyond the insertion of the palpi ; apex 

 abruptly truncated ; lip nearly quadrate, broad ; 

 the second pair of feet longest. 

 A. Eyes arranged in two nearly parallel lines ; tarsi 

 hairy beneath; the 3d pair of feet shorter than the 4th. 



Sp. 5. Leucosia. The four lateral eyes largest ; body Leucosig. 

 of a pale dirty yellow, inclining to red ; thorax with 

 the anterior margin and a posterior band yellowish- 

 grey ; the hinder band margined with olack above. 



Aranea regia, Fabr. Thomise leucosie, Walck. p. 36. 

 Thomisus leucosia, Latr. 



Inhabits Tranquebar and the Isle of France. 

 Large ; the mandibules obscure red with black un- 

 gules ; an obsolete blackish spot at the base of the tibiae; 

 the hairs of the feet spiniform, the hairyness of the 

 tarsi black ; the eyes of the anterior line approaching 

 one another in pairs. 



Sp. 6. Lamarckii. The eyes of the front line largest, L aBia rckii. 

 and nearly of equal size ; body ash-grey ; mandibules 

 blackish ; breast, middle of the venter, base of the ab- 

 domen above, with bands on the feet black. 



Aranea nobilis ? Fabr. Thomisus Lamarck, Latr. 

 Inhabits the Isle of France. Was named by La« 



