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GASTERACANTHA.— MICRATHENA. 
1. Gasteracantha cancriformis, (Tab. LI. fig. 14, 2.) 
? Aranea cancriformis, Linn. Syst. Nat. ii. p. 1037 (2?) '. 
_ Plectana cancriformis, Walck. Ins. Apt. ii. p. 151 (¢)”. 
Gasteracantha cancriformis, McCook, Amer. Spid. iii. p. 211, t. 114 figg.9,9a(9)°; F. P.-Cambr. 
Ann. & Mag. Nat. Hist. (7) vii. p. 329, t. 7. fig. 11 (?)*. 
Aranea hexacantha, Fabr. Mant. Ins. p. 344 (2 )’: 
Gasteracantha hexacantha, Banks, Proc. Calif. Acad. Sci. (3) 1. p. 249 °. 
Gasteracantha rubiginosa, C. L. Koch, Die Arachn. xi. p. 55, fig. 878’. 
Hab. Nortn America, Southern States3.—Mexico, Tepic, Guaymas (fide Banks °) ; 
Costa Rica (Rogers).— ANTILLES, Jamaica! 5, Haiti’; Banana Is. +. 
2. Gasteracantha kochi. (Tab. LI. figg. 15, 15a, b, 2.) 
Gasteracantha kochii, Butl. Trans. Ent. Soc. Lond. 1873, p. 169(?)’; F. P.-Cambr. Ann. & 
Mag. Nat. Hist. (7) vii. p. 331, t. 7. fig. 10 (@)?. | 
Gasteracantha hexacantha, C. L. Koch, Die Arachn. iv. p. 31, t. 117. fig. 268 (2) °. 
Gasteracantha cancriformis, Banks, Proc. Calif. Acad. Sci. (3) i. p. 249°. 
Type, Q,in Mus. Brit. Total breadth 18 millim. 
Hab. Mexico, Misantla (fF. D. G.), Rio Papagaio, Amula, Vera Cruz, Jalapa, Atoyac, 
Orizaba*, Teapa (H. H. Smith); Guaremata, Guatemala city (Stol/), Chicoyoito, 
Petet, Coban, Tamahu, Santa Ana, Petexbatum, Patal, Costa Cuca, Cuajiniquilapa 
(Sarg); Costa Rica, San José (Rogers).—Sourn America®, Paré!, Santarem (/’. 0. 
P.-C.). 
The following species is unknown to me :— 
3. Gasteracantha elliptica. 
Gasteracantha elliptica, Getaz, An. Inst. Costa Rica, iv. p. 105 ( ¢ ) (1898) *. 
Type, 2, in Mus. Nac. Costa Rica. 
Hab. Costa Rica, San José (Biolley'). 
This spider is said to be common in the neighbourhood of San José. 
MICRATHENA. 
Micrathena*, Sundevall, Dissert. Consp. Arachn. p. 14 (? April, 1883). 
Acrosoma, Perty, Del. Anim. Art. Bras, p. 193 (Dec. 1833). 
Keyserlingia, O. P.~-Cambridge, Biol. Centr.-Amer., Arachn. Aran. i. p. 58 (1890). 
Type of Micrathena, M. clypeata (Walck.) ; of Acrosoma, A. swainsonii, Perty, Brazil. 
Carapace always longer than broad; thoracic area convex, raised, with a small central rounded fovea, and 
other lateral fovere. Fang-groove of mandibles with four teeth above and three below. Tarsus iv. without 
* According to Mr. T. Davies Sherborn’s MSS. notes on his ‘ Index Animalium,’ Sundevall’s paper was 
“read” in April 1833, while the date of the publication of the closing papers of Perty’s work is Dee, 1833 
(vide the foot of last page). 
