108 PROC. ENT. SOC. WASH., VOL. 24, NO. 4, APR., 1922 



the base as in Tetranychidae and situated in a greatly reduced mandibular 

 plate which is completely concealed from above. Legs stout, six-segmented; 

 tarsi in immature individuals with tenent hairs and in all instars with pecten- 

 bearing claws. Vulva situated ventro-posteriorly; anus and penis terminal. 



Phytoptipalpus transitang, new species. 



Female. In general appearances similar to Tenuipalpus species, cephalo- 

 thoracic-abdominal groove marked and abdomen long and swollen in egg- 

 bearing individuals. Cephalothorax with much of its anterior margin formed 

 into a collar-like projection above the retractile mandibular plate. Eyes four, 

 subequal, and with well developed corneas; posterior eye situated less than its 

 diameter behind the anterior eye. Mandibular plate completely concealed 

 from above; it is greatly reduced in size, being much narrowed and shortened in 

 front, while posteriorly it is bilobed as usual. Chelicerae very slender, except 

 near their bases where they are elbowed and enlarged; they lie in an almost 

 capillary gutter on the upper side of the beak and are thrust from the beak at 

 its tip and not through the opening on the lower side as stated to be the case with 

 paradoxus. Palpi so completely fused with the beak that only the vestige of 

 a single segment remains more-or-less marked off and bearing a single small 

 seta. Beak as a whole rather stout and conspicuous and extending to tips of 

 femora. Abdomen sparsely clothed with moderate, curved, obsoletely pectin- 

 ate, setiform setae. Anus a subterminal and almost vertical, irregular slit. 

 Vulva large, with more or less evenly folded, or crumpled, integument around 

 its rim, situated as in Tetranychidae, i. e. ventrally, just in front of the anus. 

 Legs stout and nearly subequal; posterior pair falling far short of tip of abdomen. 

 Tarsi armed with a pair of inner, subequal claws and an outer pecten-bearing 

 pair; pecten composed of several short subequal elements each of which is 

 knobbed at its tip. Length, 0.33 mm.; width, 0.18 mm. 



Male. Considerably smaller than female and more slender. Abdomen 

 frequently somewhat drawn out and always bilobed behind, each lobe bearing 

 a distal and two inner setae. Penis very large and stout, composed of two ele- 

 ments that fit together making a strongly chitinized spike-like structure that is 

 frequently observed extending beyond the abdominal lobes. Length, 0.20 

 mm.; width, 0.10 mm. 



Type locality. Pusa, India. 



Type slide. Cat. No. 24722, U. S. N. M. 



Described from hundreds of specimens many of which were 

 dissected or given special treatment. Some of the cotypes 

 are on the type slide, some in a vial of material retained for the 

 United States National Museum, some on slides for my private 

 collection and some in a vial to be returned to Mr. Misra. All 

 specimens were taken from galls on Zizyphus jujiiba and were 

 sent in by Mr. Misra from Pusa, India. 



Actual date of publication, April 20, 1922. 



