42? 



CRUSTACEOLOGY. 



Arachni- 

 de.=. 



SS. Ubm- 



Me!ano- 

 easter. 



f'uitits. 



Ater. 



Relucens. 



S3. Clo- 



•I HO. 



brician aranea nrffpe$, we cannot but hesitate on giv- 

 ing any thing like a decided opinion. 



Genus XXXI. Filistata, Latreille. 



Eyes placed on an uneven elevation ; the four ante- 

 rior ones forming a semicircle opened in front; tile 

 four hinder ones disposed in pairs in nearly the same 

 transverse straight line. 



Maxilla: much inclined towards the lip, with no sinus 

 pr groove at the insertion of the palpi. 



Palpi apparently inserted on the hinder side. 



Lip much longer than broad. 



Feet, the fourth pair longest, and then the first pair. 



Observation. This genus contains one species, Filis- 

 tata testacca of Walckenaer's MSS. of which Ave have 

 no description ; it has lately been discovered in the en- 

 virons of Marseilles. 



Genus XXXII. Drassus, Walck. Latr. Aranea, 

 Linn. Gnaphosa, Latr. 



Palpi inserted under the lateral and external margin 

 of the maxillae towards the middle. 



Maxilla: longitudinal, arcuated, gradually becoming 

 broader from the base towards the middle, somewhat 

 concave internally, smooth exteriorly, the middle im- 



}>ressed, the points bent inwards above the lip, and ob- 

 iquely truncated within. 



Lip elongate, ovate- quadrate, or rather oval, the base 

 transversely truncated, enclosing the maxillae. 



Feet, the fourth, then the first, and afterwards the 

 second pair longest. 



* Lip somewhat oval ; the external side of the max- 

 illae much bent or arched, 



Sp. 1 . Melanogasler. Mandibules blackish ,• thorax 

 and feet obscure brown, thighs light reddish brown ; 

 abdomen cinereous-brown and silky. 

 Drassus melanogaster, Latreille. 

 Drasse lucifuge, Walckenaer, p. 45. 

 Inhabits the South of France, under stones. 

 ** Lip ovate quadrate. 



Sp. 2. Fuscus. Obscure reddish-brown, silky, the 

 abdomen blackish mouse coloured. 

 Drassus fuscus, Latreille. 



Inhabits the South of France, of the same size with 

 the other species. 



Sp. 3. Ater. Entirely black. 

 Drassus ater, Latreille. 



A small species, frequently occuring in the vicinity 

 of Paris, under stones, to which it adheres pretty firm- 

 ly ; when first hatched they are of a reddish colour. 



Sp. 4. Relucens. Red, very smooth, like purple vel- 

 vet ; abdomen black, with two transverse golden yel- 

 low lines. 



Drasse hrillant, Walckenaer, p. 46. 

 Drassus relucens, Latreille. 



Common in the south of France ; it sometimes oc- 

 curs in the neighbourhood of Paris. 



Genus XXXIII. Clotho, Walckenaer's MSS. ; La- 

 treille. 



Maxillae much inclined towards the lip, with no 

 groove at the insertion of the palpi. 

 Lip not much longer than broad. 

 Feet, fourth pair, the second, the third longest. 

 Eyes close together, disposed four and four in two 

 lines bent backward in an arched and somewhat con- 

 centric manner ; those in the hinder line disposed in 

 pairs. 



Observation. This genus contains but one species 

 described in the manuscripts of Walckenaer, who com- 

 municated the generic character to Latreille, who has 

 published it in his last work, entitled, " Consiterations 



generales sur I'ordre nalurel des Crustaces, des Arach' Arachnid 



des. 



Durandii. 



nides el des Insectes." 



Sp. 1. Durandii. Thorax rusty brown, margined 

 with pale yellow ; abdomen black, with five red spots, 

 arranged 2, 2, 1 ; feet livid brown. 



Inhabits Montpellier, building its web amongst the 

 stones. 



Clotho durandii, Latreille. 



Genus XXXIV. Clueiona, Latreille, Walckenaer. 34. Clum- 

 Aranea, Linnc, De Geer. on*. 



Maiillce straight and longitudinal ; the basis a little 

 dilated externally ; the apex rounded and obliquely 

 truncated on the inside. 



Lip elongate, quadrate, gradually narrowing towards 

 the point. 



Feet, the first, and then the fourth pair, (or the con- 

 trary), longest ; then the second pair. 



* The two outermost eyes on either side neither pla- 

 ced very close together, nor inserted on a distinct pro- 

 minence. The maxilla in all with anincrassatedbase; 

 the fourth pair of feet (rarely the first) longest. 



Sp. 1. Lapidicola. Thorax and mandibules pale Lapidicola. 

 reddish; feet very light red; abdomen ash-grey co- 

 loured. 



Clubione lapidicole, Walckenaer, p. 44. 



Clubiona lapidicola, Latreille. 



Inhabits France and Britain under stones, construct- 

 ing a somewhat globular nest of the size of a common 

 hazel nut, in the centre of which are deposited a vast 

 number of pale yellowish eggs, agglutinated into a 

 spherical mass. 



The mandibules of the male porrect, and rather more 

 than half the length of the thorax; those of the female 

 somewhat vertical. 



Sp. 2. Tholoccricca. Mandibules blackish; thorax pale Tholoceri 

 livid green ; abdomen reddish-black, covered with cea. 

 mouse-coloured clown ; feet lighter than the thorax, the 

 fourth pair longest. 



Clubione soyeuse, Walckenaer, p. 42. 



Clubiona holosericea, Latreille. 



Aranea holosericea, Linne. 



Araigiue satinee, De Geer. 



Inhabits Europe, getting under the bark of trees. 

 The four anterior feet nearly of the same size. 



Observation. From the position of the eyes it is pro- 

 bable that Cubiona accentuate/, of Walckenaer belongs 

 to this family. From his figure, the anterior, and then 

 the fourth pair of feet, are longest. 



* * The two external eyes on each side somewhat 

 placed close together. (Maxillae not thickened at their 

 base ; the first and then the second pair of feet long- 

 est.) 



A. Maxillae somewhat thickened at their base, and 

 transversely impressed before the middle. 



Sp. 3. Nutrix. Ungulae black ; thorax and man- Nuirix, 

 dibules light red ; feet very light red ; abdomen yel- 

 lowish green, with an obscure longitudinal band. 



Clubione nourrice, Walckenaer, p. 43. 



Clubiona nutrix, Latreille. 



Inhabits the environs of Paris ; common in a place 

 called Sevres, building a nest amongst the leaves of the 

 Eryngium campeslre. The mandibular of the male 

 stronger than those of the female. 



B. Maxillae not at all thickened at their base ; front 

 not transversely impressed. 



Sp. 4. Atrox. Brown ; feet pale ; the tibiae with Atroj. 

 more obscure or dark spots ; the middle of the back of 

 the abdomen with a somewhat quadrate black spot mar- 

 gined with yellow. 



