6o MEMOIRS ON THE COLEOPTERA 



by Mr. Bates. This species differs from pygmcsa in its larger size, 

 in having two short deep oblique fossae at each side of the shining 

 pronotum and in having the intermesocoxal surface more strongly 

 and pronouncedly tuberculiform. The male has the elytra almost 

 invariably pale throughout but black along the external margin, 

 and the elytral striae are extremely feebly, broadly impressed and 

 very finely and feebly punctate ; in the female the elytra are black, 

 with two large transverse, sometimes confluent, pale areas and the 

 striae are very deep and sulciform and are coarsely, deeply punctate. 

 The series before me consists of three males and four females, taken 

 by Shimek at Mt. Ometepe, Nicaragua, at an elevation of 4000 ft. 

 Intermedius Bates, of which I have an example from Guatemala, 

 much more closely resembles our pygmcea, having the pronotum 

 more densely punctate than in marginata and without the small 

 lateral fossae. The Strigoderma exigua of Schwarz, given under 

 Strigoderma in the lists, has been described (ante p. 39) under 

 Anomala.* 



* Dr. Ohaus gives a long description (Stett. Ent. Zeit., 1905, p. 285) of a Florida 

 species, which was thought by Schaeffer to be the same as pygmcea because no mention 

 of the latter was made under the original description. As I do not certainly know 

 the female of pygmcea and as the female of marginata is known to differ from the 

 male in having deeply sulcate elytra, it may be possible that floridana Ohaus, which 

 was said by the author to be founded upon the male, may in reality be the female of 

 pygmcsa. The description of Dr. Ohaus is essentially as follows: 



Strigoderma floridana Ohaus. Obscure greenish in color, slightly shining, the 

 elytra deep black, with a large yellow spot at each side behind the scutellum and a 

 transverse series of small yellow spots near the hind margin; clypeus quadrate, only 

 slightly wider than long, the edges strongly reflexed, the surface somewhat concave 

 and, like the front, feebly shining, thickly and strongly punctured and sparsely hairy, 

 the occiput more finely punctate; prothorax strongly convex, widest before the 

 middle, the sides converging posteriorly, the angles obtuse, the surface everywhere 

 thickly and finely punctate, slightly shining, with intermingled deep punctures and 

 with short fine yellowish hairs; scutellum relatively large, sculptured like the pronotum; 

 elytra evenly and deeply sulcate, the punctures of the sulci annular, the series five 

 in number between the suture and humeri, the entire surface with very fine punctures 

 and transverse rugulosities, slightly shining, sparsely and briefly hairy; the vertical 

 convex pygidium is indented at the middle and has feeble scratches; it is somewhat 

 shining and sparsely hairy; legs short and stout, the external tooth of the anterior 

 tibia near the terminal process; male with the larger claw of the intermediate tarsi 

 thickened and elongated, scarcely visibly cleft. Length (cf ) 5-5 mm.; width 3.0 mm. 

 Florida (Titusville). 



The size of the type is somewhat larger than in any of a large series of pygmcea 

 before me, although the author states that floridana is the smallest Strigodermid 

 known to him. The evidence seems at least to suggest that floridana is the female 

 of pygmcea. 



