1 86 MEMOIRS ON THE COLEOPTERA. 



Also related apparently to rubricottis and expressa, the type in- 

 cluded with the original material representing the former, but evi- 

 dently distinct in its larger and more punctate head, larger eyes 

 and in the coloration of the entire body. The fact that this aberrant 

 coloration might be due to immaturity led me to include the type 

 with the more northern forms, but, as there is no distortion on 

 drying and as the characters of the head are notably different, I 

 believe that its peculiarities indicate specific distinctness. 



Lathrobiella Csy. 



Lathrobiella atriventris n. sp. Moderately slender and convex, shining, 

 black throughout, except the prothorax, which is testaceous; head small, 

 sparsely punctate, parallel, abruptly arcuato-truncate at base; prothorax 

 parallel, rather elongate, wider than the head, finely and sparsely punctate, 

 with a rather irregular close series of punctures at each side of the smooth 

 median line; elytra parallel, longer and wider than the prothorax, with 

 indistinct unimpressed series of fine sparse punctures, the sutural groove 

 deep ; abdomen but slightly narrower than the elytra, closely and very finely 

 punctulate, not paler at tip; male with a small notch, nearly as deep as 

 wide, at the apex of the sixth ventral, the notch narrowly rounded at the 

 bottom and somewhat asymmetric, the right side being a little shallower than 

 the left. Length 4.0 mm.; width 0.68 mm. Rhode Island (Boston Neck). 



This species is not closely allied to any other but may be placed 

 next to nigricans in the series as heretofore published. 



Lathrobiella cupida n. sp. Rather slender and convex, polished, bright 

 testaceous, the elytra rather darker, red-brown; head deep black, the abdo- 

 men black throughout; head of the usual form, small, very remotely punc- 

 tate, the antennae rather stout; prothorax oblong, parallel, only slightly 

 elongate, longer and wider than the head, with small and very sparse punc- 

 tures, the series along the smooth line composed of widely spaced similar 

 punctures; elytra distinctly wider but only a little longer than the prothorax, 

 but little longer than wide, with unimpressed series of fine and well spaced 

 punctures, the sutural series not impressed, the second interval wider than 

 the others; abdomen not evidently narrower than the elytra, finely, closely 

 punctulate and duller in lustre. Length (9) 4.0 mm.; width 0.55 mm. 

 Massachusetts (Chicopee). 



Very distinct from the last and also not closely allied to any of 

 the described species. It may be placed just before modesta in the 

 list. 



Lathrobiella robustula n. sp. Stout and rather convex, shining, the ab- 

 domen black, duller, with the apices of the segments narrowly paler, the apex 

 pale as in collaris; head deep black, parallel, much shorter and narrower 



