MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 361 



LIII. Genus SUNIOSAURUS Bierig 



Suniosaurus Bxekio, 1938b, p. 139. 



Genotyj>e. — ^*^S'. ciuidriceps Bierig (original designation and mono- 

 basic). 



Diagnosis. — Body slender, elongate ; antennae filiform, not verticil- 

 late, posteriorly flexile at first joint; labrum with two long, slender, 

 hornlike processes within a slight emargination; third segment of 

 maxillary palpus much enlarged, fourth minute; gular sutures appar- 

 ently united behind from near middle ; neck about two-fifths as wide 

 as head; pronotum quadrate; hypomera divided by a diagonal line 

 descending from base to middle of side; prosternum longitudinally 

 carinate at middle, dilated under coxae nearly as far as the hypo- 

 mera ; anterior coxae large, prominent ; mesosternum not carinate ; mid- 

 dle coxal cavities confluent; abdomen strongly margined; sternites of 

 first and second segments not present; front femora dilated; tarsi 

 5-segmented, slender, fourth tarsomere simple. 



Remarks, — These characters are taken from the specimen collected 

 by N. A. Weber at Soledad. Sr. Bierig's diagnosis was very brief but 

 does not conflict with the above except in regard to the gular sutures, 

 which he described as obsolete. They are very clear in the specimen 

 examined by me. 



There is some question as to whether this genus will key out prop- 

 erly in my key to the Paederini (Blackwelder, 1939), since the pros- 

 ternal process is expanded under the coxae only about halfway to the 

 hypomeral edge. It seems clearly to belong in the present series^ 

 however, rather than in the Medon-group. 



This genus was said to be intermediate between Suniocharis and 

 Suniotrichus, but my study of these two genera shows them to be very 

 widely separated in the subfamily, the former being close to Dibel- 

 onetes and Echiaster^ the latter being close to Thinochar-is. My exam- 

 ination indicates that it probably is more nearly related to Suniocharis 

 and will stand next to that genus in the key. It may be distinguished 

 readily by the size and shape of the labral denticles. 



I have seen only one specimen, which seems to belong to the geno- 

 type species. 



I. SUNIOSAURUS CUADRICEPS Bierig 



Suniosaurus cumlria pn Bieisig, 1938b. pp. 140, 143. — Blackwelder, 1939a, p. 122. 



Descriptiofi. — Eufocastaneous. Head subquadrate; eyes at about 

 twice their length from base; antennae long and slender, no seg- 

 ments transverse; with moderate indistinctly umbilicate punctures 

 almost completely obscured by dense scaly ground sculpture. Pro- 

 noturn as wide as head, as broad as long, sides rounded into base; 

 without impunctate midline; without punctures but sculptured as 



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