49° 



S. UCHIDA 



Gen. Myrsidea Waterston. 



18. Hyrsidea teraokai n. sp. (Fig. 2) 



A single female specimen was 

 taken from Dcmiegretta jiignlaris grayi 

 shot in the Ponape Id. (April 26). 



This new species somewhat re- 

 sembles Myrsidea insolita Kellogg and 

 Paine/ 5 and also M. extranea Carriker, 2) 

 but differs from both in the more 

 developed metathorax as well as in 

 the shape of abdominal segments. The 

 members of Myrsidea have heretofore 

 been found chiefly on Passerine 

 birds, especially on the higher groups 

 such as the Corvida?. Myrsidea diffusa 

 Kellogg and Chapman, which was 

 taken from the Ardeida.- as well as 

 from several passerine hosts, was the 

 only species of the genus which was 

 recorded to have been ever taken from 

 the Ardeidaj. 



Description of the female : — Body 



a. Myrsidea teraokai n. sp., female. short > broad > MI mm. long and O.55 



X50. b. Ventral aspect of the anterior mm. wide; with enormously developed 

 part of abdomen, x 50. . 



metathorax. Ground colour or body 



pale brownish ; with distinct markings of pitchy brown on head and 



with smoky brownish lateral bands on abdomen. 



Head 0.31mm, long, 0.46mm. wide; front broadly rounded, with 



two short hairs at middle and two long and a few short marginal 



1) Kellogg and Paine, Ree. Ind. Mus., X, 1914, p. 238, fig. 4. 



2) Carriker, Univ. Stud. Nebr., Ill, 1903, p. 173, pi. vi, fig. 3. 



