214 bulletin: museum of comparative zoology. 



Thomisoides Nicolet. 



Nicolet, Gay hist. ChQe. zooL, 1847?, pi. 1 Arachn., 1849, 3, p. 352. 



As Plate I of Nicolet's work on spiders in Gay's Histoire de Chile 

 was issued and in Walekenaer's hands before the publication of volume 

 four of the Histoire naturelle des Insectes Apteres, the species illus- 

 trated on that plate and named at the bottom must be dated at the 

 latest from 1847 rather than from 1849 when the text was published, 

 since the issuance of figures of this kind with accompanying names 

 constitutes publication. Thomisoides is used in the legend of the 

 plate in combination with specific names and must accordingly be 

 regarded as having been established at the same time. Walekenaer's 

 genus Sicarius, like his species thomisoides, was based upon the pub- 

 lished plate of Nicolet's work, and I can see, therefore, no other way 

 than to drop both Sicarius and thomisoides as clear synonyms. 



Thomisoides terrosus Nicolet. 

 Plate 9, fig. 6-10; Plate 10, fig. 1-3. 



Thomisoides terrosus Nicolet, Arachn. pi. 1, fig. 9, Gay's Hist. Chile, 1847?, 



Gay's Hist. Chile, 1849, 3, p. 352, Arachn., pi. 1, fig. 9. 

 Sicarius terrosus Simon, Hist. nat. Araign., 1893, 1, p. 271. 



In alcohol the cephalothorax is reddish brown, the abdomen grey- 

 brown, and the legs and sternum brown of lighter shade than carapace. 



Cephalothorax wider than long; width across head decidedly less 

 than half the greatest width; low; shorter than tibia I but longer than 

 tibia IV. The margins and the anterior surface of the head bearing 

 numerous short, stout, spiniform bristles which are distally l)lunt and 

 toothed like those of the legs. 



Sternum almost circular, equal in length and breadth (3.15 mm.) 

 or very slightly wider than long; depressed behind at middle in front 

 of caudal margin and giving the appearance of being deeply emargi- 

 nate though the caudal edge at middle is really convexly rounded; 

 with two or three rows of stiff bristles along the edge and smaller 

 bristles arranged on radii with their free ends towards centre of ster- 

 num; between the bristles short fine hair. 



Labium gradually narrowing from base distad; tip obtusely 



